Part 1 is complete

Passes unit test.
Unit test for part 2
Part 2 is completed
Unit Test for part 3.
Fixed the unit test.
Part 3 works.
Added commenting.
Added Part 4 unit test.
Part 4 was super easy.
Corrected part 5 unittest.
Part 5 is working.
Unittest for part 6, final part.
Added the import.
Part 6 is done, assignment is done.